Quenching device fob beat-treating



- HE. SoMEs QUENCHING DEVICE FQR HEAT TREATIG PPARATUS Matth 6, 1945.

original Filed sept. ,11, 19:57 2 sheets-sheet 1 Nvr Af Illlll INVENT'OR Hawa-dl?. Somes J/ /51/14474 ATTORNEY BYCMM? H. E. SOMES March 6, 1,945.

QUENCHING DEVICE FOR HEAT TREATING APPARATUS Original Filed Sept. 17, 1957 2 Sheets-Sheet 2 33) 34 INVENTOR Howard'. Somes ATTORNY v treating articles Patented Mar. `6, 1945` APiiflals'r` oFFicE 2,311,117 -QUnNoniNG nevica Foa naar-'rana'rmq I i Patterns Howard E. Somes, Detroit-Mich., assignor to -Bndd Induction Heating, Inc., Philadelphia,

Pa., a corporation of Michigan Original application September 17, 1937, Serial No. 164,320. Divided and this application Jani l uary 20, 1942, Serial No. 427,485

s calm a2ac-si This application is a division of my copending application, Serial No. 164,320, illed September 17,

1937, patented April 28, 1942No. 2,281,331, and the subject matter divided therefrom relates in which is mounted for movement thereon by means of a plurality of guide rods i1 lslidably mounted in tubular guide members form I.

general toquenching apparatus for use in heat o upper ends of the rods I'I through shouldered ex- A hardenable by heating and quenching.

The primary object of the Iinvention is the provision of an improved quenchinghcad which is extendable to a tubular' member which has been heated to a. hardening temperature.

Another object is to provide a'quenching apparatus with a quench discharging head which is extendable from a retracted non-operative to an i5 extended operative position in quenching relation with anarticle heated to a hardening temperature through the medium of a fluid 4motor means'. the fluid for actuating such motor means being the ysame iluid'as that employed for the quenching operation, thusv providing -a simpliiied and economical construction in which assurance is hadv that the quenching fluid. can be discharged only when the quench head is in its. proper position for quenching the heated article.

In the drawings which illustrate the quenching apparatus. shown in my parent application afore said;

Figure 1 is an elevational view of the apparatus,

quenching position within a l0 `tensions liii which slidably extend through openings in thefholder |=2 thus enabling various interchangeable work holders provided with like arrangements of openings 20 to be employed in place of the holder |2, so that workpieces of different diameters may be treated with the same apparatus.

The rods il are connected at their lower ends for movement as a unit by a yoke member 2| which is arranged to be raised and lowered by a work cylinder 22 supported by the lower central part of a well 23 formed in the platform I I. 'This work cylinder is provided with a piston 24 which is fixed to a tubular shaft 25 keyed to the central 2o portion of the yoke against axial movement relative thereto. Connections to the .interior of the shaft 25 for admitting and discharging operating iiuid at opposite ends of the piston '2l are provided through suitable pipe connections 2l and 28 which 26 extend to a suitable fluid control mechanism, not

shown. Y

The quenching apparatus is supported through the medium of a tubular member 29 mounted within the tubular shaft 25. This member 28 a portion of the same being'shown in section to 3 which is counterbored from its lower end to proillustrate the quenching apparatus:

Figure 2 is an axial section taken substantially at right angles to the view shown in Figure 1; and

Figure 3 is a fragmentary view similar to Figure 2 showing the quench head in an extended operative quenching position. f Referring to the accompanying drawings, in which like numerals refer to like parts through the several views, the apparatus is, mounted Y upon a vsuitable base I0 and is carried by a vertivided with a vertically movable work holder v| 2 for holding the workpiece inan axially vertical posi. tion. The workpiece here shown for thepurpose y vide an enlarged bore 31. extends axially beyond the end of the central portion of the yoke 2| as clearly shown in Figure 2. 'I'he extending end of the tubular member 2,9 is closed by a cap 20 havv ing a guide rod 2| supported thereby to extend 40 thereof. cally adjustable work carriage or platform I I proi 'I'he cap 20 is surrounded by an annular mem- .ber 22 to provide an annular chamber 2l therewith. A-conduit ,3l connected with a suitable source of quenching iluid, not shown, is providedof illustration is a tubular member 2 with lrespect 45 for introducing quenching fluid into the chamber to which the b ore I4 thereof has been heated and is to be quenched by the apparatus now to bedescribed.

, Theicarriage or platform I I is slidably mounted 24, the chamber 24 communicating with the interior of the tubular member 29 through a plurality of passages 28.

The quench member comprises a tubular rod 28 on a pairof uprights II forming part of the base closed at its upper end and provided adjacent this |0, and is arranged to be moved upwardly and downwardly by a pair of elevating screws It which may be driven in any suitable manner.

' As shown in detail in Figure 1, the platform Il end with any desired number -of quench discharge openings 29. This rod extends through the tubular member 29 with its lower end surrounding the f guide rod 2| in slidable telescoping relation, the carries the vertically /movable work holder |2 N intermediate portion of the rod 2l having a sliding I8 provided on the plat- The work holder I2 is supported on, the

spring 4| is interposed between this piston and the end 42 of the enlarged bore 31 to urge the piston and attached rod 39 to a lowermost or retracted position, this being the non-quenching position. It is to be noted also that in this lowermost position the rod 39 covers the ports 32 in the guide rod ,lo

3| to prevent communication through these ports between the quenching fluid space surrounding the quench rod 38 and the internal passage of the same.

In the lowermost position of the quench rodI 3l, 15 the upper or nozzle end thereof is disposedbelow the workpiece i3 carried by the work holder I2, as shown in Figure l, so that the bore oi the workpiece may be heated in any suitable manner,

such as that described in my copending applica- 2p tion aforesaid.

After the workpiece is heated to the desired temperature and the heating apparatus removed from within the bore thereof, quenching fluid is admitted to the chamber I4 through conduit 35 25 under pressure `and this quenching fluid enters the enlarged bore 31 ofthe tubular member 2l through the passage 36 where it acts against the piston 40 to raise the quench rod 3l to an extended position against the resistance of the spring 4|, 30

this extended position being shown in Figure 3. 'I'he extended position of the quench rod 38 is predetermined by the engagement of the piston with a shoulder 43 formed in the enlarged bore 31, and it is to be noted that the ports 32 in the 35 guide rod 3i are not uncovered until the guide rod 3B reaches this extended position. As soon as the ports 32 are uncovered by the quench rod Il, the quenching fluid may thus ilow into the ports I2 through the quench rod and-thence into 4o the discharge openings )I for projection againstthe heated internal surface of the workpiece to be quenched. YThe ports l2 and the pressure of the quench iluid, of course, are such that the pressure o the quench fluid is sumciet to maintain the quench rod in its uppermost position.

I have thus provided a quenching apparatus and movable means for actuating the same to a n quenching position which by reason of the fact I that the quench fluid also serves as the medium .50

f for actuating the motor means provides for sim.

pliiication of construction and operation of the apparatus. One advantage of the construction described is that the discharge of'the quenching medium can take place only when the. quench nozzle is in its proper position to perform an eilicient quenching operation and not at some improper intermediate position. Th ir brought about by the tact that the supply POl'ts I! are not uncovered tor flow to the nossle openings Il' until the piston 4l is in its uppermost position, as l shown in Figure 3. ,which position predetermines the quenching position of the quench head or rod.

It is to be understood that while I have shown and described a certain speciiic embodiment and mode of operation of the present invention for the sake of illustration, the invention is not limited to such specific embodiment and mode of operation but contemplates auch variants and modications thereof as fall fairly within the scope of the appended claims. What is claimed is:

l. In an apparatus for quenching a heated workpiece, a tubular rod having a quench discharge passage adjacent one end thereof, a piston and cylinder means associated with said rod for longitudinally moving said rod from a re tracted non-quenching position to an extended quenching position, means for supplying quenching fluid under pressure to said piston and cylinder means to move said rod to said extended position, and valve means openable upon said rod reaching its extended position to establish communication between said piston and cylinder means and the interior of said rod for the ilow of quenching iluid from said piston and cylinder means through said rod to said quench discharge A passage.

2. In an apparatus for quenching a heated workpiece, a tubular support, a tubular quenching duid-conducting rod longitudinally slidably mounted in said support, said support having a closed end and a guide rod-extending into the adjacent end of said rod, said guide rod having a central passage and openings in the wall thereof, normally closed by said fluid-conducting. rod in retracted position, said duid-conducting rod hav ing a piston cooperating with said support and forming a chamber with said support and closed end, and means for introducing quenching fluid under pressure into said chamber for moving said piston and iluidconducting rod to an extended quenching position, said huid-conducting rod uncovering said openings upon reaching said extended position to permit quenching fluid to flow from said chamber `through said openings' to the passage therein for quenching fluid and being movable from an inoperative non-quenching.po sitionto an operative quenching position. actuating means associated with said quench discharge member and being operative by quenching iluid to move said quench diischarge member from inoperative -to operative position, means for supplying quenching iiuid under pressure to said actuating means, and means operable by the movement oi' said quench discharge member to operative position to conduct quenching iluid from said actuating means to said passage.

HOWARD E. 80H18. 

